scholarly journals ROOT HAIR DEFECTIVE4 Encodes a Phosphatidylinositol-4-Phosphate Phosphatase Required for Proper Root Hair Development in Arabidopsis thaliana

2008 ◽  
Vol 20 (2) ◽  
pp. 381-395 ◽  
Author(s):  
Julie M. Thole ◽  
Joop E.M. Vermeer ◽  
Yanling Zhang ◽  
Theodorus W.J. Gadella ◽  
Erik Nielsen
Keyword(s):  
Arabidopsis Thaliana ◽  
Root Hair ◽  
Root Hair Development ◽  
Hair Development ◽  
Phosphatidylinositol 4

Salt-induced plasticity of root hair development is caused by ion disequilibrium in Arabidopsis thaliana

2007 ◽  
Vol 121 (1) ◽  
pp. 87-96 ◽  
Author(s):  
Youning Wang ◽  
Wensheng Zhang ◽  
Kexue Li ◽  
Feifei Sun ◽  
Chunyu Han ◽  
...  
Keyword(s):  
Arabidopsis Thaliana ◽  
Root Hair ◽  
Root Hair Development ◽  
Hair Development

scholarly journals Importin-β From the Recretohalophyte Limonium bicolor Enhances Salt Tolerance in Arabidopsis thaliana by Reducing Root Hair Development and Abscisic Acid Sensitivity

2021 ◽  
Vol 11 ◽  
Author(s):  
Yanyu Xu ◽  
Xiangmei Jiao ◽  
Xi Wang ◽  
Haonan Zhang ◽  
Baoshan Wang ◽  
...  
Keyword(s):  
Arabidopsis Thaliana ◽  
Abscisic Acid ◽  
Salt Tolerance ◽  
Root Hair ◽  
Salt Gland ◽  
Physiological Parameters ◽  
Limonium Bicolor ◽  
Root Hair Development ◽  
Aba Sensitivity ◽  
Hair Development

AimsTo elucidate the genetics underlying salt tolerance in recretohalophytes and assess its relevance to non-halophytes, we cloned the Limonium bicolor homolog of Arabidopsis thaliana (Arabidopsis) SUPER SENSITIVE TO ABA AND DROUGHT2 (AtSAD2) and named it LbSAD2, an importin-β gene associated with trichome initiation and reduced abscisic acid (ABA) sensitivity, and then we assessed the heterologously expressed LbSAD2 in Arabidopsis.MethodsWe examined LbSAD2 expression and assessed the effect of heterologous LbSAD2 expression in Arabidopsis on root hair/trichome induction; the expression levels of possible related genes in trichome/root hair development; some physiological parameters involved in salt tolerance including germination rate, root length, and contents of Na+, proline, and malondialdehyde; and the response of ABA at the germination stage.ResultsThe LbSAD2 gene is highly expressed in the salt gland development stage and salt treatment, especially located in the salt gland by in situ hybridization, and the LbSAD2 protein contains some special domains compared with AtSAD2, which may suggest the involvement of LbSAD2 in salt tolerance. Compared with the SAD2/GL1 mutant CS65878, which lacks trichomes, CS65878-35S:LbSAD2 had higher trichome abundance but lower root hair abundance. Under 100 mM NaCl treatment, CS65878-35S:LbSAD2 showed enhanced germination and root lengths; improved physiological parameters, including high proline and low contents of Na+ and malondialdehyde; higher expression of the salt-tolerance genes Δ1-PYRROLINE-5-CARBOXYLATE SYNTHETASE 1 (P5CS1) and GST CLASS TAU 5 (GSTU5); reduced ABA sensitivity; and increased expression of the ABA signaling genes RESPONSIVE TO ABA 18 (RAB18) and SNF1-RELATED PROTEIN KINASE 2 (SRK2E), but not of the ABA biosynthesis gene 9-CIS-EPOXYCAROTENOID DIOXYGENASE 3 (NCED3).ConclusionLbSAD2 enhances salt tolerance in Arabidopsis by specifically reducing root hair development, Na+ accumulation, and ABA sensitivity.

scholarly journals A Glycine Soja 14-3-3 Protein GsGF14o Participates in Stomatal and Root Hair Development and Drought Tolerance in Arabidopsis thaliana

2013 ◽  
Vol 55 (1) ◽  
pp. 99-118 ◽  
Author(s):  
Xiaoli Sun ◽  
Xiao Luo ◽  
Mingzhe Sun ◽  
Chao Chen ◽  
Xiaodong Ding ◽  
...  
Keyword(s):  
Arabidopsis Thaliana ◽  
Drought Tolerance ◽  
Root Hair ◽  
Glycine Soja ◽  
Root Hair Development ◽  
Hair Development

scholarly journals Inhibition of Pre-mRNA Splicing Promotes Root Hair Development in Arabidopsis thaliana

2019 ◽  
Vol 60 (9) ◽  
pp. 1974-1985 ◽  
Author(s):  
Miku Ishizawa ◽  
Kayo Hashimoto ◽  
Misato Ohtani ◽  
Ryosuke Sano ◽  
Yukio Kurihara ◽  
...  
Keyword(s):  
Arabidopsis Thaliana ◽  
Root Hair ◽  
Protein A ◽  
Root Hairs ◽  
Carbon Dioxide Concentration ◽  
Light Response ◽  
Mrna Splicing ◽  
Gene Encoding ◽  
Root Hair Development ◽  
Hair Development

Abstract Root hairs protruding from epidermal cells increase the surface area for water absorption and nutrient uptake. Various environmental factors including light, oxygen concentration, carbon dioxide concentration, calcium and mycorrhizal associations promote root hair formation in Arabidopsis thaliana. Light regulates the expression of a large number of genes at the transcriptional and post-transcriptional levels; however, there is little information linking the light response to root hair development. In this study, we describe a novel mutant, light-sensitive root-hair development 1 (lrh1), that displays enhanced root hair development in response to light. Hypocotyl and root elongation was inhibited in the lrh1 mutant, which had a late flowering phenotype. We identified the gene encoding the p14 protein, a putative component of the splicing factor 3b complex essential for pre-mRNA splicing, as being responsible for the lrh1 phenotype. Indeed, regulation of alternative splicing was affected in lrh1 mutants and treatment with a splicing inhibitor mimicked the lrh1 phenotype. Genome-wide alterations in pre-mRNA splicing patterns including differential splicing events of light signaling- and circadian clock-related genes were found in lrh1 as well as a difference in transcriptional regulation of multiple genes including upregulation of essential genes for root hair development. These results suggest that pre-mRNA splicing is the key mechanism regulating root hair development in response to light signals.

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